Great Addon, A few suggestions to make it even better! Rated 5 out of 5 stars

A great addon for me. Congrats on creating it buddy. Here are a few more suggestions to make it even better :
1.Enable a hotkey to show the grid
2.Enable putting bookmarks folders in the grid so that we can put a bookmark in a desired folder in 1 step. (No other addon lets you put a bookmark in its folder in less than 3 steps, your addon will become unique if you did this - I imagine that many people will use it solely to create bookmarks. So think of doing this)
3.Enable exporting preferences to a text file and importing them back from the same text file.

This review is for a previous version of the add-on (1.5.4).